// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_CALLBACKS_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_CALLBACKS_H_

#include <stdint.h>

#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/threading/thread_checker.h"
#include "content/common/content_export.h"
#include "content/common/indexed_db/indexed_db.mojom.h"
#include "content/public/browser/browser_thread.h"

namespace content {
class IndexedDBDatabaseError;
class IndexedDBDispatcherHost;
class IndexedDBTransaction;

class CONTENT_EXPORT IndexedDBDatabaseCallbacks
    : public base::RefCounted<IndexedDBDatabaseCallbacks> {
public:
    IndexedDBDatabaseCallbacks(
        scoped_refptr<IndexedDBDispatcherHost> dispatcher_host,
        ::indexed_db::mojom::DatabaseCallbacksAssociatedPtrInfo callbacks_info);

    virtual void OnForcedClose();
    virtual void OnVersionChange(int64_t old_version, int64_t new_version);

    virtual void OnAbort(const IndexedDBTransaction& transaction,
        const IndexedDBDatabaseError& error);
    virtual void OnComplete(const IndexedDBTransaction& transaction);
    virtual void OnDatabaseChange(
        ::indexed_db::mojom::ObserverChangesPtr changes);

protected:
    virtual ~IndexedDBDatabaseCallbacks();

private:
    friend class base::RefCounted<IndexedDBDatabaseCallbacks>;

    class IOThreadHelper;

    scoped_refptr<IndexedDBDispatcherHost> dispatcher_host_;
    std::unique_ptr<IOThreadHelper, BrowserThread::DeleteOnIOThread> io_helper_;
    base::ThreadChecker thread_checker_;

    DISALLOW_COPY_AND_ASSIGN(IndexedDBDatabaseCallbacks);
};

} // namespace content

#endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_DATABASE_CALLBACKS_H_
